Does Morning Light actually make a difference, or is it overhyped?

Evidence in this dataset relates mainly to the broader role of light exposure and circadian rhythms in health, including reviews on circadian regulation of metabolism and cardiovascular function, plus more specific research on evening light exposure (e-readers) impairing sleep and light therapy improving insomnia. Weighing the data: Morning Light looks an early-stage, lower-priority area for now — the evidence is only emerging (32/100), and its estimated impact (35/100) is on the lower end too.